My class 10 & 12 marks are not good. I want to do MBA. How can I build my CV to get admission in a decent MBA college ? I am good at basketball and sketching.

Ans: Completing a Cost and Management Accounting (CMA) course can certainly add value to your resume when applying for an MBA program.
While a CMA course can demonstrate your commitment to continuing education and professional development, it's not the only factor that determines admission to an MBA program. B.Com degree can provide you with a strong foundation in business and accounting principles, which is also valuable for an MBA program. At the end of the day, it would come down to what you would like to focus on in your career whether you would like to focus on a career in costing & account management or would you like to have multiple options open for your career

Ans: Write the CAT, XAT, CMAT, CET. There are a lot of free material available online for preparation. But do not look at too many sources. Just pick up 2 to 3 channels and follow then for preparation.
My channel is Patrick100. https://www.youtube.com/channel/UCVChaeF2RzTLxLnDlYlFkGQ

Ans: Do a specialization that you are interested in. In the first year you are exposed to all specialization and need to select your specialization in the second year. Finance gives you a higher salary than others but you need to be good in numbers and it is a high risk job.

Ans: Your portfolio looks like that of an ideal MBA candidate

If I were you, I would polish my interviewing skill to the maximum because you look ideal on paper

The actual test for you would be in the interview room